Well my bike came with the powerbomb headers on them and I heard that improves top end. I want to get more low end pop so that I can loft the front wheel easier. Would re-gearing it be the best method? I heard some one say a pumper carb would help that also but not sure if that is true or not. I'm running 15/47 now and I don't see much need with my riding ability to go faster than 90-100 so I want to get it more set up for low end torque. Any ideas would be appreciated. Thanks!